US6149086A - Shoe mounting bracket for a vertical shaft impact crusher and liner for same - Google Patents
Shoe mounting bracket for a vertical shaft impact crusher and liner for same Download PDFInfo
- Publication number
- US6149086A US6149086A US09/273,790 US27379099A US6149086A US 6149086 A US6149086 A US 6149086A US 27379099 A US27379099 A US 27379099A US 6149086 A US6149086 A US 6149086A
- Authority
- US
- United States
- Prior art keywords
- bracket
- shoe
- crusher
- liner
- spacer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
- B02C13/18—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor
- B02C13/1807—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate
- B02C13/1814—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate by means of beater or impeller elements fixed on top of a disc type rotor
- B02C13/1828—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate by means of beater or impeller elements fixed on top of a disc type rotor with dead bed protected beater or impeller elements
Definitions
- the present invention relates to rock crushing apparatus, and more particularly to vertical shaft impact crushers.
- rock crushers One important consideration in the design of rock crushers is the extension of the useful life span of the equipment. It will be appreciated that certain of the components come into direct contact with the rock material and therefore are subject to wear.
- the wear components are typically releasably attached to the rock crushing apparatus so that they may be removed and replaced. Other components are intended to be permanent, and therefore must be protected from direct contact with the rock material.
- the non-wear components are usually more permanently attached to the crusher apparatus.
- the rotating impeller comprises a generally flat table having multiple shoe assemblies projecting from a top surface of the table near its periphery.
- the shoe assemblies typically comprise a support bracket attached to the table and a shoe releasably secured to the bracket.
- Rock material is dropped near the center of the table and, under centrifugal force, moves toward the periphery of the table where the shoes direct the large rock material toward an impact surface surrounding the table assembly, typically an anvil ring.
- the table is mounted on a flywheel attached to a rotating shaft.
- the shoes and anvil ring contact the rock material and therefore are wear components which should be attached to the crusher apparatus in such a manner that they are easily removed and replaced.
- the table, flywheel, and shaft are shielded from direct impact and therefore are more permanent, non-wear components.
- conventional vertical shaft impact crushers often have a liner to protect the bracket from rock material bouncing off of the anvil ring.
- the liner is typically bolted in place and covers an outside face of the bracket.
- the centrifugal force acting on the shoe and bracket cause deflections in the bracket which increase in magnitude proportional to the height of the bracket above the upper surface of the table.
- the uneven deflections across the height of the bracket act to pry the bottom of the liner away from the bracket, thereby breaking the bolts from the bracket.
- the present invention is provided to reduce the shear forces between the bracket and the shoe and/or to reduce prying forces between the bracket and the liner.
- a shoe assembly in a vertical shaft impact crusher having a table assembly mounted for rotation about a central axis.
- the shoe assembly comprises a shoe having a front guide surface, a rear attachment surface, a contact surface extending transversely of the central axis, and a threaded aperture formed in the attachment surface.
- the shoe assembly further comprises a bracket having a front face, a rear face, an opening extending through the bracket from the front face to the rear face, and a support surface extending transversely of the central axis.
- a bolt is inserted through the opening and threaded into the threaded aperture to thereby releasably secure the shoe to the bracket.
- the support surface is disposed radially outwardly of the contact surface so that the contact surface of the shoe engages the support surface of the bracket when the table assembly is rotated.
- the shoe may have a boss projecting rearwardly from the attachment surface so that an outer wall of the boss forms the contact surface.
- the bracket may have a recessed pocket formed in the front face sized to accept the boss, an outer wall of the pocket forming the support surface.
- the opening in the bracket may be formed as a horizontally extending slot to ensure that the contact surface engages the support surface.
- a liner in a vertical shaft impact crusher having a table rotating about a central axis and a bracket attached to an upper surface of the table, the bracket having an outside face.
- the liner has a shielding surface and a mounting surface, the shielding surface being sized to substantially cover the outside face of the bracket, and the mounting surface adapted for releasable attachment to the outside face of the bracket.
- a spacer projects from the mounting surface to thereby form a gap between the mounting surface of the liner and the outside face of the bracket.
- FIG. 1 is a schematic view in perspective of a vertical shaft impact crusher in accordance with the present invention
- FIG. 2 is a side elevation view, in section, of a vertical shaft impact crusher in accordance with the present invention
- FIG. 3 is a top plan view of the table assembly of the present invention.
- FIG. 4 is a side elevational view, in section, of the table assembly taken along line 4--4 of FIG. 3;
- FIG. 5 is a perspective view of a table in accordance with the present invention having a plurality of brackets attached thereto;
- FIG. 6 is a top plan view, in section, taken along line 6--6 of FIG. 4 of a shoe assembly of the present invention including a liner.
- FIG. 7 is a side elevation view of a liner in accordance with the present invention.
- FIG. 8 is a plan view, in section, of the liner taken along line 8--8 of FIG. 7.
- a vertical shaft impact crusher of the present invention has a housing 12 with a housing cover 14 attached thereto.
- the housing cover 14 defines a feed opening 15, and a hopper 16 is attached to the housing cover 14 at the feed opening 15.
- a separate motor housing 18 is spaced from the housing 12 and houses a motor 20.
- the housing 12 is generally cylindrical and has a central axis 22 extending vertically.
- a bearing assembly 24 is locating inside the housing 12, the bearing assembly rotatably journaling a shaft 26 having a table assembly 28 attached to an upper end.
- the lower end of the shaft 26 carries a pulley 30 which is driven by the motor 20 through a belt 32.
- the table assembly 28 comprises a flywheel 34, a table 36, and a table cover 38.
- the table 36 is bolted to the flywheel 34 while the table cover 38 is attached to an upper surface of the table 36.
- a center portion of the table cover 38 provides a landing surface 39 onto which rock material entering the crusher 10 is deposited.
- the flywheel 34 engages the shaft 26 so that the entire table assembly 28 rotates with the shaft.
- the table assembly 28 may further comprise a reinforcing ring 70 attached to a bottom surface of the table 36.
- the reinforcing ring 70 may be adapted to allow a rim liner 76 to be attached to the table assembly 28 to thereby protect an outer edge 37 of the table 36 from the crushing impact inside the crusher 10.
- each shoe assembly 40 is attached to an upper surface of the table assembly 28.
- each shoe assembly 40 comprises a bracket 42 and a removable shoe 44.
- each bracket 42 is welded to the table assembly 28 near a periphery of the table 36 (FIG. 5).
- Each bracket 42 is formed with a recess 46 located generally in a rear face of the bracket and a pocket 48 located in a front face of the bracket.
- a pair of openings 50 extend through the bracket 42 from the recess 46 to the pocket 48.
- the pocket 48 has a support surface 47 extending transversely of the central axis 22.
- Each shoe 44 is formed to be releasably attached to a corresponding bracket 42.
- the shoe 44 has a front guide surface 54 and a rear attachment surface 59.
- the guide surface 54 is curved and extends generally radially from the central axis 22.
- the guide surface 54 has forward projecting upper and lower edges 56, 58 (FIG. 4).
- a boss 52 projects from the rear attachment surface 59 of each shoe 44 and is shaped to slidably fit inside the pocket 48 formed in the bracket 42.
- a pair of threaded apertures 60 are formed in the boss 52 and are positioned so that they are aligned with the bolt holes 50 when the boss 52 is inserted in the pocket 48, as illustrated in FIG. 6.
- a pair of bolts 62 (FIG.
- An anvil ring 64 is located around a periphery of the housing 12 for providing an impact surface 66 for breaking incoming rock material (FIG. 2).
- the anvil ring 64 comprises a plurality of individual anvils 64 spaced about the interior of the housing 12. While the illustrated embodiment shows an anvil ring 64, it will be appreciated that the impact surface 66 may be provided by other structure, such as previously broken rock material accumulating on a rock shelf. Crushed rock collects in a bottom portion of the housing 12 where a removal device (not shown) carries the crushed rock out of the crusher 10.
- rock material is dumped into the hopper 16 where it passes through the feed opening 15 to be deposited on the landing surface 39 of the table assembly 28.
- the motor 20 drives the shaft 26 so that the attached table assembly 28 rotates in a counterclockwise direction indicated by arrow 11 in FIG. 3.
- rock material deposited on the Landing surface 39 is driven radially outwardly from the center of the table assembly 28 by centrifugal force.
- the guide surfaces 54 of the shoes 44 define travel paths through which the rock material is directed.
- the guide surfaces 54 direct the rock material toward the anvil ring 64 at an angle which optimizes breakage.
- the broken rock material collects at the bottom of the housing 12 where it is removed.
- the centrifugal force acting to throw the shoe radially outwardly is resisted by the bracket 42, thereby reducing shear forces acting on the mounting bolts 62.
- the openings 50 in the bracket 42 are aligned with the threaded apertures 60 such that the contact surface 53 engages the support surface 47 as the table assembly 28 rotates.
- the openings 50 are formed as horizontally extending slots.
- the slots have radiused inside and outside edges 80, 81 formed about centerlines 82a and 82b, respectively.
- the contact surface 53 of the shoe 44 engages the support surface 47 of the bracket 42.
- the shear forces on the mounting bolts 62 are significantly reduced since the bracket structure 42, rather than the bolts 62, resists movement of the shoe 44 in the radially outward direction.
- a liner 90 is attached to an outside face 92 (FIG. 6) of the bracket 42 to thereby protect the bracket 42 from rock material ricocheting off of the anvil ring 64.
- the liner 90 has a substantially planar rear mounting surface 91 and a curved front shielding surface 93 sized to substantially cover the outside face 92.
- a pair of bolt holes 94 extend through the liner 90 from the front surface 93 to the rear surface 91 and threaded apertures 95 are formed in the outside face 92 of the bracket, so that the liner 90 may be releasably attached to the bracket 42 using bolts (not shown).
- Spacers 97 are located on the mounting surface 91 of the liner 90, generally disposed around the each bolt hole 94.
- the spacers 97 may be formed integrally with the liner 90, such as by machining or casting, or may be provided as separate components which are permanently affixed to the liner 90, such as by welding.
- the spacers 97 are annular washers welded to the mounting surface 91 of the liner 90.
- the spacers 97 have a thickness "T" (FIG. 8) which creates a gap 98 between the outside face 92 of the bracket 42 and the mounting surface 91 of the liner 90 when the liner 90 is attached to the bracket 42.
- the gap 98 is most preferably formed between the top portions of the liner 90 and bracket 42.
- the gap 98 is formed substantially uniformly between the entire lengths of the liner 90 and bracket 42. Only the spacers 97 contact the bracket 42, and therefore the gap 98 allows the bracket 42 to deflect unevenly without creating a significant prying force against the liner 90.
- the vertical shaft impact crusher of the present invention has significant advantages over prior crushers.
- the use of spacers on the mounting surface of a liner creates a gap between the liner and the bracket, thereby reducing the risk of prying the liner from the bracket due to uneven deflections in the bracket.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Pulverization Processes (AREA)
- Crushing And Grinding (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/273,790 US6149086A (en) | 1999-03-22 | 1999-03-22 | Shoe mounting bracket for a vertical shaft impact crusher and liner for same |
CA002298332A CA2298332C (fr) | 1999-03-22 | 2000-02-14 | Ferrure de montage de sabot pour concasseur a percussion a arbre vertical et chemisage connexe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/273,790 US6149086A (en) | 1999-03-22 | 1999-03-22 | Shoe mounting bracket for a vertical shaft impact crusher and liner for same |
Publications (1)
Publication Number | Publication Date |
---|---|
US6149086A true US6149086A (en) | 2000-11-21 |
Family
ID=23045411
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/273,790 Expired - Lifetime US6149086A (en) | 1999-03-22 | 1999-03-22 | Shoe mounting bracket for a vertical shaft impact crusher and liner for same |
Country Status (2)
Country | Link |
---|---|
US (1) | US6149086A (fr) |
CA (1) | CA2298332C (fr) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1018383C2 (nl) | 2001-06-26 | 2003-01-07 | Johannes Petrus Andreas Zanden | Versnellingsblok met verstevigingsplaat. |
CN100463726C (zh) * | 2007-07-05 | 2009-02-25 | 贵州优利斯凯机械有限公司 | 一种立轴式冲击破碎机的组合多功能转子及其制作方法 |
WO2010005287A1 (fr) * | 2008-07-08 | 2010-01-14 | Synside Maatschap | Rotor avec espace central fermé et élément de couvercle |
US20110155832A1 (en) * | 2008-07-15 | 2011-06-30 | Synside Maatschap | Sliding member that is pivotly attached along one side to an open rotor |
CN105170269A (zh) * | 2015-08-24 | 2015-12-23 | 太仓澄天机械有限公司 | 一种新型制砂机 |
US20170050189A1 (en) * | 2015-08-17 | 2017-02-23 | Rock Engineered Machinery Company, Inc. | Anvil assembly for vsi crusher |
US9586209B2 (en) | 2012-01-03 | 2017-03-07 | Metso Minerals, Inc. | Driving of rotating crusher elements |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4090673A (en) * | 1977-02-18 | 1978-05-23 | Canica Crushers Ltd. | Centrifugal impact rock crushers |
US4577806A (en) * | 1983-11-18 | 1986-03-25 | Acrowood Corporation | Impeller assembly for an impact crusher |
US4699326A (en) * | 1984-06-22 | 1987-10-13 | Cedarapids, Inc. | Vertical shaft impact crusher with split tub |
US4896838A (en) * | 1988-10-31 | 1990-01-30 | Cedarapids, Inc. | Rotor for vertical shaft impact crushers |
US4923131A (en) * | 1988-06-06 | 1990-05-08 | Rossouw Pieter J | Rotary impact crusher rotor |
US4940188A (en) * | 1987-12-24 | 1990-07-10 | John Rodriguez | Tip holder for mineral breaker |
US5323974A (en) * | 1992-03-27 | 1994-06-28 | Nakayama Iron Works, Ltd. | Vertical shaft impact crusher |
US5497951A (en) * | 1993-01-22 | 1996-03-12 | Nakayama Iron Works, Ltd. | Rotor blade structure for vertical shaft impact crusher |
US5639030A (en) * | 1994-04-12 | 1997-06-17 | Nakayama Iron Works, Ltd. | Vertical shaft impact crusher and operating method therefor |
-
1999
- 1999-03-22 US US09/273,790 patent/US6149086A/en not_active Expired - Lifetime
-
2000
- 2000-02-14 CA CA002298332A patent/CA2298332C/fr not_active Expired - Lifetime
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4090673A (en) * | 1977-02-18 | 1978-05-23 | Canica Crushers Ltd. | Centrifugal impact rock crushers |
US4577806A (en) * | 1983-11-18 | 1986-03-25 | Acrowood Corporation | Impeller assembly for an impact crusher |
US4699326A (en) * | 1984-06-22 | 1987-10-13 | Cedarapids, Inc. | Vertical shaft impact crusher with split tub |
US4940188A (en) * | 1987-12-24 | 1990-07-10 | John Rodriguez | Tip holder for mineral breaker |
US4923131A (en) * | 1988-06-06 | 1990-05-08 | Rossouw Pieter J | Rotary impact crusher rotor |
US4896838A (en) * | 1988-10-31 | 1990-01-30 | Cedarapids, Inc. | Rotor for vertical shaft impact crushers |
US5323974A (en) * | 1992-03-27 | 1994-06-28 | Nakayama Iron Works, Ltd. | Vertical shaft impact crusher |
US5497951A (en) * | 1993-01-22 | 1996-03-12 | Nakayama Iron Works, Ltd. | Rotor blade structure for vertical shaft impact crusher |
US5639030A (en) * | 1994-04-12 | 1997-06-17 | Nakayama Iron Works, Ltd. | Vertical shaft impact crusher and operating method therefor |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1018383C2 (nl) | 2001-06-26 | 2003-01-07 | Johannes Petrus Andreas Zanden | Versnellingsblok met verstevigingsplaat. |
CN100463726C (zh) * | 2007-07-05 | 2009-02-25 | 贵州优利斯凯机械有限公司 | 一种立轴式冲击破碎机的组合多功能转子及其制作方法 |
WO2010005287A1 (fr) * | 2008-07-08 | 2010-01-14 | Synside Maatschap | Rotor avec espace central fermé et élément de couvercle |
US20110168824A1 (en) * | 2008-07-08 | 2011-07-14 | Synside Maatschap | Rotor with closed centre space and cover member |
US8657220B2 (en) | 2008-07-08 | 2014-02-25 | Johannes P. A. J. Van der Zanden | Rotor with closed centre space and cover member |
US20110155832A1 (en) * | 2008-07-15 | 2011-06-30 | Synside Maatschap | Sliding member that is pivotly attached along one side to an open rotor |
US9586209B2 (en) | 2012-01-03 | 2017-03-07 | Metso Minerals, Inc. | Driving of rotating crusher elements |
US20170050189A1 (en) * | 2015-08-17 | 2017-02-23 | Rock Engineered Machinery Company, Inc. | Anvil assembly for vsi crusher |
US10441956B2 (en) * | 2015-08-17 | 2019-10-15 | Rock Engineered Machinery Company, Inc. | Anvil assembly for VSI crusher |
CN105170269A (zh) * | 2015-08-24 | 2015-12-23 | 太仓澄天机械有限公司 | 一种新型制砂机 |
Also Published As
Publication number | Publication date |
---|---|
CA2298332A1 (fr) | 2000-09-22 |
CA2298332C (fr) | 2007-04-10 |
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